This is a repository containing the solutions for the tasks given out by Gurzu Inc. as part of their recruitment process.

1. Pseudo Code

Q. There are 50 dice. 20 of them are facing 4. Remaining 30 are facing 3. You can’t see which dice is facing what number. Write pseudo code to separate these 50 dice into 2 groups, so that both groups have the same number of 4’s.

Solution:

There are total 50 dice with 20 of them facing 4 and 30 facing 3. Therefore, to divide the 50 dice into 2 groups such that each group has equal no. of dice facing 4, both the groups must have 10 dice facing 4. Below is the step by step pseudo code for the process:

1. array1=[50 dices]
2. array2=array1.splice(0,array1.length)
3. count occurence of dice facing 4 in array1
4. if count==10 then return array1,array2
5. else if count<10 then, loop through array2, and if current_element==10 remove and add to array1 and repeat until count==10
6. else if count>10 then, loop through array1, and if current_element==10 remove and add to array2 and repeat until count==10

2. Shell Commands

Q. A comma separated file(csv) has 5 columns and 10 rows. Write shell commands to extract the value of 3rd column 5th row and output the result into a text file.

Solution: cat file1.csv|sed -n 5p|cut -d "," -f 3|cat>file2.csv

In the above group of piped shell commands (UNIX), the 1st command cat outputs the contents of the file1.csv file, the 2nd command sed extracts the 5th line/row of the output, the 3rd command cut extracts the 3rd value of that row and the lastly the 4th command cat> stores the result into file2.csv.

3. Weather App

A React Native Weather App for viewing weather forecast for the whole week for any city. The app fetches the data from the Open Weather API. Download APK file.

3.1. App Demo